What is the probability that the sample mean
Heights of trees in a forest are normally distributed with mean 50 feet and standard deviation 12 feet. In a random sample of 36 trees what is the probability that the sample mean:
a. Exceeds 55ft
b. Between and 47.5 and 53.1 feet.
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The working fluid at 23C rejects 100 kJ/min as heat transfer from the engine. Determine the temperature of the fluid during heat addition, in degrees Celcius.
Calculate the x-component of the force on a 1.0-cm long piece of the lower right-hand wire, due to the other three wires.
A random sample of size 64 is drawn from a population with mean 80 and standard deviation 20. Describe the sampling distribution of the sample mean.
Assuming no slip conditions and that the system is initially at rest, determine the acceleration of the masses and tension Ta and Tb?
The four wires that lie at the corners of a square of side a= 4.20 cm are carrying equal currents i= 1.30 A into (+) or out of (-) the page, as shown in the picture. A) Calculate the y component of the magnetic field at the center of the square.
A random sample of size 100 is drawn from a population with population proportion 0.70. Find the probability that the sample proportion:
If the mass flow rate of steam is 50 kg/h, determine the rate of heat rejection to the cold reservoir, in kJ/h c) the thermal efficiency.
Sixty percent of all road accidents are due to distracted driving. In a random sample of 100 accidents, what is the probability more than 70 are due to distracted driving.
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